Mounting assembly for room air conditioners



y 9, 1967 M. D. ULICH 3,318,226

MOUNTING ASSEMBLY FOR ROOM AIR CONDITIONERS Filed Jan. 29, 1965 2 Sheets-Sheet 2 FIG. FIGJZ. 9o

32 r 3g 30 414 n- 0 -32 1| I T I #86 l I as United States Patent tion of Pennsylvania Filed Jan. 29, 1965, Ser. No. 428,909 9 Claims. (Cl. 9894) This invention relates to self-contained, room air conditioners and like appliances, and more particularly to a mounting assembly for supporting these appliances in openings provided, for example, in the wall of a building.

Although not limited thereto, the present mounting assembly is particularly adapted for supporting a self-contained, room air conditioner within a window opening so that, as is conventional, a portion of the air conditioner is disposed exteriorly of the window and a portion is disposed inside the room. As will become apparent, the present mounting assembly also is useful in supporting these appliances in openings other than window openings, for example, an opening made in the wall of a building so as to locate the appliance at a more suitable location.

The principal object of the invent-ion is to provide an improved mounting assembly which simplifies the installation of room air conditioners and like appliances, to the point where the appliance may easily be installed by the homeowner rather than being installed by a skilled mechanic.

Another object of the invention is to provide a mounting assembly having a minimum number of parts and which is relatively inexpensive to manufacture.

Still another object of the invention is to provide a mounting assembly having a member serving the twofold purpose of sealing the opening in which the appliance is mounted and hiding the fasteners and elements fastened thereby so as to give the installation a finished appearance.

A further object of the invention is to provide a mounting assembly having novel infill panels which are easily severable at any one of a plurality of lines so that the width of the infill panels will correspond substantially with the width of the space it is intended to close.

A still further object of the invention is to provide a mounting assembly having novel infill or wing panels, three sides of which are adapted to engage directly the window frame and the window thereby eliminating the need for additional gasketing.

Another object of the invention is to provide an improved wing panel retainer spring which permits a wing panel to be seated directly into a window track, the arrangement being such that a portion of the retainer spring is flexed by the panel and thereafter the panel is slid into engagement with the window track.

A still further object of the invention is to provide an improved locking member which permits the window to be elevated from a distance sufficient only to permit installing the appliance and which thereafter maintains the window engaged with the top of the appliance.

In accordance with the present invention, a mounting assembly is provided for supporting a room air conditioner or like appliance in an opening, such as a window opening. The present mounting assembly comprises a yoke which preferably is secured to and surrounds the top and opposite sides of the casing of the appliance. The yoke includes a peripheral flange projecting from the top and both sides of the appliance, the arrangement being such that at least a portion of the peripheral flange, for example, that portion projecting from the top of the appliance, may be secured to the structure surrounding the opening in which the appliance is to be mounted.

The present mounting assembly also includes a trim member which is secured to the appliance adjacent to the yoke and surrounds the top and sides of the appliance. The trim member is provided with a leg portion which projects above the top and laterally of the sides of the appliance beyond the outer edges of the peripheral flange of the yoke. The trim member is at least coextensive in length with the yoke and preferably extends slightly beyond the opposite ends of the yoke. The trim member is provided with a protruding edge disposed along the periphery of the leg portion thereof. The trim member preferably is formed from resilient material and therefore serves the twofold purpose of being a gasket whose protruding peripheral edge is adapted to engage the inner face of the structure surrounding the opening and thereby seal the same against ingress of air and debris; and being a trim member which completely covers the yoke and associated fasteners thereby giving the installation a finished and an attractive appearance.

The yoke and trim member preferably are preassembled on the casing of the appliance so that the appliance may be mounted directly into an opening without further assembly operations.

The present mounting assembly also is provided with infill or wing panels of novel construction which are used when the appliance is installed in a window opening. As is conventional, the wing panels close the space between a side or both sides of the appliance and the window frame. However, in accordance with the present invention, the wing panels are severable at any one of a plurality of spaced, parallel lines so as to conform the width of the panel with the width of the space it is intended to close.

A novel retainer spring is provided which maintains a side edge of the panel seated in the window track of the window frame. The novel retainer spring is so constructed that the panel flexes the same during installation of the panel. Hence, the panels are inserted into position from within the building rather than having to be inserted from a position outside the building as in some prior art devices.

The present mounting assembly also is provided with a window stop which is secured to the frame and engages the top of the window. The window stop is movable in the direction of travel of the window from an upper position which permits the window to be lifted through a distance sufiicient only to permit the insertion of the appliance into the window opening to a lower position in which it maintains the window engaged withthe top of the appliance.

The above and other objects and advantages of the present invention will become apparent from the following detailed description by reference to the accompanying drawings, in which:

FIGURE 1 is an isometric view, in exploded form, illustrating a yoke and trim member of the present mounting assembly;

FIG. 2 is a side View illustrating one arrangement of the yoke and trim member of FIG. 1, wherein the trim member is shown in cross section;

FIG. 3 is a side view, similar to FIG. 2, illustrating an alternative arrangement of the yoke and trim member of FIG. 1, wherein the trim member is shown in cross section;

FIG. 4 is a front view of a wing panel employed in the present mounting assembly;

FIG. 5 is a fragmentary view illustrating the back of an upper portion of the wing panel of FIG. 4;

FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. 4;

FIG. 7 is a cross-sectional view taken along the line VII--VII of FIG. 4; I

FIG. 8 is a cross-sectional view, similar to FIG. 7, illustrating the severing of the wing panel of FIG. 4;

FIG. 9 is an isometric view of a wing panel retaining spring member;

FIG. 10 is an isometric view of a window stop member;

FIG. 11 is a fragmentary front view of a wall of a building having an opening within which an appliance is supported by means of the present mounting assembly;

FIG. 12 is a fragmentary front view of a conventional window opening within which an appliance is supported by means of the present mounting assembly;

FIG. 13 is a cross-sectional view taken along the line XIIIXIII of-FIG. 12;

FIG. 14 is a cross-sectional view taken along the line XIVXIV of FIG. 12;

FIG. 15 is a cross-sectional view taken along the line XV-XV of FIG. 12; and 7 FIG. 16 is a fragmentary isometric view of the top of a window sash illustrating the use of the window stop member of FIG. 10.

Mounting assembly-component parts As will become apparent, the present mounting assembly may be used to support appliances in window open ings, such as double-hung sash type windows, casement windows and the like, as well as to support appliances in a building opening other than window openings, these latter installations'being commonly known as through-thewall installations.

In thisspecification and the appended claims, the terms inner, interiorly and like terms will be employed to define positions within or facing the interior of the room; and the terms outer, exteriorly and like terms will be employed to define positions outside of or facing away from the interior of the room.

The present mounting assembly comp-rises several components all or some of which are used to support the appliance, depending upon the particular type of installation. These components now will be described with reference to FIGS. 1-10, inclusive.

Referring now to FIGS. 1 and 2, there is illustrated a mounting yoke 20 forming the appliance supporting component and a trim member 22. The mounting yoke 20 comprises a central angle member 24 and a pair of side angle members 26. The side angle members 26 each is provided with an end tab 28 adapted to overlie an end of the central angle member 24 and be secured thereto. The angle members 24, 26 include a first flange member 30 and a second flange member 32 extending perpendicularly from the first flange member 30. When the mounting yoke 20 is assembled as illustrated in FIG. 2, the first flange member 30 form a substantially continuous ribbon adapted to surround the top and opposite sides of an appliance while the second flange members 32 are substantially coplanar and define a substantially continuous peripheral flangewhich preferably projects perpendicularly from the top and sides of the appliance. Since the flange members 32 are coplanar, the mounting yoke 20 is particularly adapted for supporting appliances in an opening formed in the wall of a building. That is, an opening other than a window opening. As will be described, the second flange members 32 will abut the structure surrounding the opening and be secured thereto.

The trim member 22 has an inverted U-shaped configuration corresponding to the configuration of the mounting yoke 20. The trim member 22 preferably is formed from resilient material and has a generally L-shaped cross section, best shown in FIG. 2, including a first continuous leg 34 adapted to underlie the first flange 30 of the mounting yoke 20 and a second continuous leg 36 adapted to overlie the peripheral flange 32 of the mounting yoke 20. The second leg 36 extends beyond the peripheral flange 32 and terminates in a protruding peripheral edge 38 adapted to engagethe interior surfaces of members surrounding the opening in which the appliance is installed.

An alternative embodiment of the mounting yoke is illustrated in FIG. 3. Corresponding prime numerals will be employed to identify those elements which differ in one manner or another from the elements already described. As can be seen in FIG. 3, a mounting yoke 20' includes side angle members 26' having a width which is less than the width of the central angle member 24. Hence, the side angle members 26 have a second flange member 32' which is offset from the second flange member 32 of the central angle member 24 in a direction away from the second continuous leg 36 of the trim member 22, i.e., to the left of FIG. 3. The mounting yoke 20 thus is adapted to receive wing panels (to be described) between the second flange members 32 and the adjacent portions of the second continuous leg 36 of the trim member 22. As will be described, the yoke 20' is particularly adapted for supporting appliances in a window opening and is provided with wing panels for closing the space between the appliance and the window frame.

As can be seen in FIGS. 2 and 3, the first leg 34 of the trim member 22 underlies the first flange member 30, while the second leg 36 of the trim member 22 overlies the second flange members 32 and 32 of the mounting yokes 20 and 20, respectively. Since the trim member 22 completely hides the mounting yoke 20 or 20, the trim member 22 serves the twofold purpose of being a gasket wherein the peripheral edge 38 thereof seals the opening against the ingress of air and debris; and being a trim member which hides the mounting yoke and gives the installation a finished and an attractive appearance.

The present mounting assembly also includes novel infill or wing panels which are provided in pairs, that is right-hand and left-hand panels. The left-hand wing panel is illustrated in FIGS. 4-8, inclusive, and is indicated by the numeral 40. The wing panel 40 is generally rectangular in shape having opposed side edges 42, 44, a top edge 46 and a bottom edge 48. Adjacent to and inset from the side edge 44 and the bottom edge 48, there is provided ridge means 50 comprising a strip 52 at the side edge 44 extending from the top edge 46 to a point adjacent to the bottom edge 48 and a plurality of aligned pedestals 54 at the bottom edge 48 extending from the side edge 42 to the strip 52. Centrally of the strip 52 there is provided a tab 56, best shown in FIG. 6, which serves as a handle for moving the panel 40 laterally of the window opening.

The wing panel 40 has an upper end portion 58 which is offset from the plane of the remainder of the panel 40 at least by an amount equal to the thickness of the panel 40. The purpose of the offset upper end portion 58 will become apparent later in the specification.

The wing panel 40 also is provided with a plurality of uniformly spaced, parallel grooves or score lines 60 formed in at least one face and preferably both faces thereof. The groves 60 provide guide lines for severing the panel 40 into two segments, oneof which having a width which corresponds substantially to the width of the space it is intended to close. Each of the grooves 60 on one face of the panel 40 is directly opposite one of the grooves 60 on the other face of the panel 40. In order to reduce the width of the panel 40 to the desired dimension, a suitable cutting implement (not shown) is employed to cut into the panel 49 as, for example, along those opposed grooves indicated in FIG. 7 by the arrows labeled C. Thereafter, the panel 40 may be broken along the scored grooves as illustrated in FIG. 8, into a panel segment indicated at X which is to be discarded and a panel segment 40' whose width corresponds substantially with the width of the space to be closed.

As an aid in installing the Wing panels 40, the grooves 60 may be spaced, for example, at one-quarter inch intervals and selected ones of the grooves 60 on the reverse side of the panel 40, may be marked as illustrated in FIG. 5, to correspond with the overall dimension of the window opening. For example, should the window open ing be 35% inches wide, each of the wing panels would 'be severed along the groove labeled A in FIG. 5, which corresponds to the 35 /2 inches dimension, The portion of the wing panel 40 beyond the groove A, that is, to the left of FIG. 5, would be discarded.

The present mounting assembly also is provided with a novel panel edge retaining spring 62 illustrated in FIG. 9. The retainer spring 62 comprises a generally U-shaped body portion 64 having opposite ends, each of which terminates in an outwardly bent portion 66 having a tang 68 provided at each end thereof. The tangs 68 are adapted to be embedded in the woodwork of a window frame, as will be described. Extending longitudinally and outwardly of the body portion 64 is a tongue 70.

The tongue 70 has a reversely bent free end 72 which, as will be described, is positioned for engagement with the exterior face of one of the panels 40 at a position exteriorly of the window track.

The present mounting assembly also provides a window stop 74 illustrated in FIG. and comprising an angle segment having a pair of mutually perpendicular arms 76, 78. A slot 80 is provided in the arm 76 which extends longitudinally thereof. A slot 82 is provided in the arm 78 which extends transversely thereof. Fasteners (not shown) comprising conventional wood or metal screws will extend through one or the other of the slots 80, 82 for securing, for example, the arm 76 to the frame of a window opening. The window stop 74, as will be described, serves as a gage which allows the window to be positioned at two different elevations above the appliance.

T hrough-the-wall installations Reference is now directed to FIG. 11, wherein there is illustrated a fragment of a building wall 84 having an opening 86 within which an appliance, such as a self-contained room air conditioning unit 88 is installed. As stated above, the yoke and trim member 22 preferably are preassembled to the air conditioning unit 88 so as to form an integral part thereof. Hence, to install the unit 88 within the -opening.86, it is only necessary to insert the unit 88 into the opening 86 until such time as the second flange members 32 engage the wall 84. Thereafter the trim member 22 being formed from resilient material, may easily be bent away from the yoke 20 to provide easy access thereto for fastening the same to the building wall 84. When the trim member 22 is released from its outwardly bent position, it will assume its normal position with the protruding edge 38 engaged with the building wall 84. It should be evident then that the installation of the air conditioning unit 88 in the opening 86 may be accomplished without the aid of skilled mechanics heretofore required.

Window opening installations A window opening installation now will be described with reference to FIGS. 12-16, inclusive. Referring now to FIG. 12, there is illustrated a fragment of a building wall 90 provided with a window frame 92 supporting upper and lower window sashes 94, 96 for movement in a vertical direction. The lower window sash 96 is raised and provides an opening 98 defined by the lower rail 100 of the lower window sash 96, the vertical sides 102 of the window frame 92 and the sill 104 of the frame 92. An appliance, such as a self-contained room air conditioning unit 106 has assembled thereon the mounting yoke 20' (not visible) and the trim member 22. The air conditioning unit 106 is inserted within the opening 98 and a pair of the wing panels is employed to close the spaces on opposite sides of the air conditioning unit 106.

As can be seen in FIG. 13, the front portion of the air conditioning unit 106 rests on the window sill 104. The second flange member 32 of the mounting yoke 20' is engaged over and secured to an interior face 108 of the lower rail 100 of the window sash 96. The protruding peripheral edge 38 of the trim member 22 also is engaged with the interior face 108 thereby sealing against ingress of air and debris beneath the lower rail 100.

The air conditioning unit 106 is supported within an opening 98 by resting on the window sill 104 and having the mounting yoke 20' engaged with the interior face 108. It is important, then, when installing the air conditioning unit 106 within the window opening 98 that the unit 106 be prevented from being pushed entirely through the window opening 98. Hence, some means must be provided for stopping the unit 106 from being pushed completely through the wind-ow opening 98. This means conveniently comprises the lower rail 100 of the lower window sash 96. As can be seen in FIG. 13, the lower rail 100 also is shown in dotted outline disposed slightly above the top of the unit 106 at a distance sufficient to permit the insertion of the air conditioning unit 106 within the window opening 98. The above-described window stop 74 serves to position the lower sash 96 at the first location wherein the lower rail 100 (dotted line) is spaced above the unit 106 and at a second location wherein the lower rail 100 (full line) is engaged with the unit 106. FIG. 16 illustrates the installation of the window stop 74 in the window frame 92. As can be seen therein the arm 76 of the window stop 74 is secured within a window track 110 of the window frame 92 by means of a fastener 112. If desired, the other arm 78 of the window stop 74 may be secured to the top face 114 of the lower window sash 96 by means of a fastener 116. The fastener 112 extends through the vertically oriented slot of the arm 76 and comprises releasable means which permits the lower sash 96 to be moved between the aforementioned first and second locations, i.e., through a distance equal to the length of the slot 80.

Referring now to FIGS. 13 and 16, the window stop 74 is initially secured to the top face 114 with the arm 76 thereof engaged with and slida-ble over the window track 110. The lower window sash 96 is elevated by a predetermined distance whereby the lower rail will be positioned at the dotted line position. At that time the fastener 112 is engaged with the bottom of the slot 80 and driven through the window track so as to prevent further upward movement of the window sash 96. The air conditioning unit 106 may now be inserted within the window opening 98 until such time as the mounting yoke 20' engages the interior face 108 of the lower rail which is disposed in the dotted line position. Thereafter, the lower window sash 96 is lowered until such time as the lower rail 100 engages the top of the unit 106. The fastener 112 is tightened thereby preventing upward movement of the lower window sash 96. The unit 106 now is temporarily supportedwithin the window opening 98. To complete the installation, the trim member 22 is bent away from the mounting yoke 20, fasteners (not shown) are employed to secure the mounting yoke 20 to the lower rail 100 and then the trim member 22 is released so that the peripheral edge 38 thereof will rest against the interior face 108.

Reference is now directed to FIGS. 14 and 15 wherein the installation of the left-hand wing panel 40 (as viewed in FIG. 12) is illustrated. Each of the wing panels 40 require only one of the retainer springs 62 which is held within the window track 110 adjacent to the sill 104 as shown in FIG. 14. As can best be seen in FIG. 15, the window track 110 comprises an inner wall 118 and opposed side walls 120. The outwardly bent end portions 66 of the retainer spring 62 engage the inner wall 118 and have the tangs 68 thereof embedded in the opposed side walls 120, whereby the retainer spring 62 is maintained in a fixed position with respect to the window track 110. The wing panel 40 has its side edge 42 received between the second flange member 32' of the side angle member 26 and the second continuous leg 36 of the trim member 22. A portion of the exterior face 122 of the wing panel 40 is engaged over the second ber 22 and the side angle member 26'.

flange member 32 of the side angle member 26', while the peripheral edge 38 of the trim member 22 rests against the interior face 124 of the wing panel 40 to prevent ingress of air and debris. The opposite side edge 44 of the wing panel 40 is disposed behind the side wall 120 of the window track 110 and the strip 52 is engaged with the window frame 92 to prevent lateral movement of the wing panel 40. Notice at'this time, that the reversely bent free end 72 of the tongue 70 is engaged with the exterior face 122 of the wing panel 40 exteriorly of the window track 110 and urges the same in a direction interiorly of the window opening 98.

Referring now to FIG. 14, the lower edge 48 of the wing panel 40 is disposed behind the sill 104 while the pedestals 54 are engaged with the top surface of the sill 104 thereby preventing downward movement of the wing panel 40. Further, the upper offset portion 58 of the wing panel 40 is engaged over the interior face 108 of the lower rail 100.

It should be evident by comparing FIGS. 14 and 15, that the wing panel 40 is in sealed, surface engagement along three sides thereof with the lower rail 100, the window frame 92 and the sill 104; and has its remaining side edge, that is, the side edge 42, sealed by means of the protruding edge 38 of the trim member 22. Hence,

additional gasketing material to seal theedges of the wing panel as in conventional installations, is eliminated.

Installation of the 'wing panels 40 is easily accomplished. For example, the side edge 42 of the left-hand wing panel 40 initially is inserted between the trim mem- The lower lefthand portion of the wing panel is engaged with the reversely bent free end 72 of the tongue 70 and flexed outwardly of the window opening 98 so that the entire wing panel 40 may be moved downwardly to seat the pedestals 54 on the top of the sill 104 and thereafter laterally to the left of FIG. until such time as the strip 52 is seated against the window frame 92. Simultaneous with the engagement of the pedestals 54 with the. top face of the sill 104, the upper offset portion 58 of the wing panel 40 will engage the interior face 108 of the lower rail 100. Lateral movement of the wing panel 40 is, of course, afforded by grasping the tab 56.

Although the invention has been shown in connection with certain specific embodiments, it will be readily apparent to those skilled in the art that various changes in form and arrangement of parts may be made to suit requirements without departing from the spirit and scope of the invention.

I claim as my invention: 1. A mounting assembly for an appliance disposed 1 within a wall opening comprising a yoke adapted to surround the top and opposite sides of the-appliance, said yoke having a flange portion adapted for engagement with the inner peripheral edge of said opening, and a trim member of resilient material having one leg secured by said yoke to said appliance, and another leg portion substantially coextensive in length with said yoke, overlying said flange portion and biased thereagainst, said another leg portion being yieldable inwardly from said flange to expose the inner face of said flange to permit the selective placement of fastening means through said flange portion and into said inner peripheral edge of said opening, said another leg portion including a protruding peripheral edge disposed beyond the outer edge of said flange portion and adapted to rest against the inner peripheral edge of the opening surrounding said appliance whereby said trim member hides said mounting yoke and seals said opening.

2.'T he mounting assembly of claim 1 wherein the yoke and trim member are both L-shapedin cross section, the yoke having a leg portion overlying said one leg portion of the trim member which is in contact with the sides of the appliance, and means securing both the yoke and the trim member to the sides of the appliance.

' 3. In combination with an appliance disposed within a wall opening, a mounting assembly for supporting said appliance in said opening comprising a mounting flange projecting from the top and opposite sides of said appliance and engaged with the inner peripheral edge of said opening, means for securing said mounting flange to the inner peripheral edge of said opening, and a trim member projecting from the top and opposite sides of said appliance over and beyond the outer edge of said mounting flange, said trim member being formed from resilient material being biased against said mounting flange, and being yieldable inwardly from said flange to expose the inner face of said flange to permit the selective placement of said securing means, said trim member having a peripheral edge engaging the inner peripheral edge of said opening whereby said trim member hides said mounting flange and seals said opening against the ingress of air.

4. In combination with an appliance disposed within a window opening, a first mounting flange secured to and projecting upwardly from the top of said appliance, means securing said first mounting flange to an inner peripheral edge of said window opening, second and third flanges secured to and projecting from opposite sides of said appliance, said second and third flanges being outwardly offset from the inner vertical face of said window opening, a trim member secured to said appliance and projecting from the top and opposite sides of said appliance over and beyond the outer edges of all of said flanges, said trim member being formed from resilient material, being biased against said first, second, and third flanges, and being yieldable inwardly from said first, second, and third flanges to expose the inner faces thereof to permit the selective placement of said securing means through at least said first mounting flange, and wing panels positioned on opposite sides of said appliance closing the spaces between the periphery of the window opening and the sides of said appliance, each of said wing panels having a side edge received between said trim member and a respective one of said second and third flanges.

5. The combination of claim 4 wherein an opposite side edge of each of said wing panels resides within a window track formed in the frame of said window opening, and including spring means residing within said window track for retaining said opposite side edge of said wing panels within said window track, said spring means comprising a generally U-shaped spring member positioned horizontally and having ends engaged with the opposite sides of said window track, said spring member having a tongue extending horizontally toward said appliance into engagement with the exterior face of said wing panel at a position exteriorly of said window track, said tongue being adapted to be flexed horizontally outwardly by said wing panel during installation of the same.

6. The combination of claim 5 wherein said spring member is positioned adjacent to the bottom of said wing panel, and wherein said wing panel has an upper portion engaged over the inner vertical face of said window.

7. The combination of claim 4 including a window stop comprising a plate member having an end portion engaged with the top of said window and a slot formed therein extending longitudinally of said plate member, and releasable means extending through said slot for securing said plate member to the frame of said window opening, said sl-ot being oriented parallel to the direction of movement of said window whereby said window may be moved in one direction through a distance suflicient to permit installation of said appliance in said window opening and thereafter moved in the opposite direction into engagement with the top of said appliance and locked in engagement with said appliance.

8. A wing panel for use in closing the space between an appliance mounted within a window opening and the frame of said window opening, comprising a generally rectangular sheet formed from frangible, plastic material, said sheet having an upper portion which is offset from the plane of said sheet, ridge means projecting outwardly from said sheet for providing abutment surfaces adapted to engage said frame, said ridge means extending along one side edge and a bottom of said sheet and being offset with respect to said one edge and said bottom, and a plurality of uniformly spaced, parallel grooves formed in at least one face of said sheet, the grooves extending parallel with said one side edge and the sheet being severable along lines defined by said grooves for reducing the width of said wing panel.

9. In combination with an appliance disposed within a window opening defined by a window frame having window tracks at the vertical sides thereof within which slide upper and lower sashes, a first mounting flange secured to and projecting from the top of said appliance, means for securing said first mounting flange to the inner vertical face of said lower sash, second and third flanges each secured to and projecting from the opposite sides of said appliance, said second and third flanges being outwardly offset from the inner vertical face of said lower sash, a trim member secured to said appliance and projecting from the top and opposite sides thereof over and beyond the outer edges of said first mounting flange and said second and third flanges, wing panels placed on opposite sides of said appliance for closing the spaces between said lower sash, said Window frame and the sides of said appliance, each of said wing panels having a side edge received between said trim member and an associated one of said second and third flanges, an upper portion on each wing panel offset from the plane of the panel and engaged with over the inner vertical face of said lower sash, a. plurality of spaced, parallel grooves in at least one face of each wing panel, said panels being formed from plastic material whereby each of said panels is 10 easily severable along a selected one of said grooves to conform the width of said panel substantially with the width of said spaces, said trim member having a protruding peripheral edge engaged with the inner faces of said wing panels and said lower sash, a spring member within each of said window tracks adjacent the bottom of said window frame, each of said spring members having a tongue extending outwardly from said window track and engaged with the exterior face of an associated one of said panels at a position exteriorly of its associated window track, and a window stop comprising a member releasably secured to said window frame and having a lower portion thereof engaged with the top of said lower sash, said member being movable from an elevated position wherein said lower sash is elevated a suflicient distance to permit the insertion of said appliance into said window opening to a lowered position wherein said lower sash is maintained engaged with the top of said appliance.

References Cited by the Examiner UNITED STATES PATENTS 2,294,664 9/ 1942 Hubbard 9894 2,799,062 7/1957 Callan 98-94 2,818,793 1/1958 HOrd 9894 2,889,764 6/1959 McGrath 9894 2,911,899 11/ 1959 Spiegelhalter 9894 2,914,818 12/1959 Pritzert 9894 2,998,711 9/ 1961 Komroff 9899.8 3,048,095 8/1962 MacLeod 9899 ROBERT A. OLEARY, Primary Examiner.

M. A. ANTONAKAS, Assistant Examiner. 

8. A WING PANEL FOR USE IN CLOSING THE SPACE BETWEEN AN APPLIANCE MOUNTED WITHIN A WINDOW OPENING AND THE FRAME OF SAID WINDOW OPENING, COMPRISING A GENERALLY RECTANGULAR SHEET FORMED FROM FRANGIBLE, PLASTIC MATERIAL SAID SHEET HAVING AN UPPER PORTION WHICH IS OFFSET FROM THE PLANE OF SAID SHEET, RIDGE MEANS PROJECTING OUTWARDLY FROM SAID SHEET FOR PROVIDING ABUTMENT SURFACES ADAPTED TO ENGAGE SAID FRAME, SAID RIDGE MEANS EXTENDING ALONG ONE SIDE EDGE AND A BOTTOM OF SAID SHEET AND BEING OFFSET WITH RESPECT TO SAID ONE EDGE AND SAID BOTTOM, AND A PLU- 